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Use of Agricultural Wastes and Limestone for the Removal of Iron from Drinking Water

Ajayi, O. O. and Omole, D. O. and Emenike, PraiseGod C (2016) Use of Agricultural Wastes and Limestone for the Removal of Iron from Drinking Water. In: 3rd International Conference On African Development Issues (CU-ICADI), May 9- May 11 2016, Covenant University, Ota, Nigeria.

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In this study, adsorption method was employed in the treatment of iron in drinking water. Groundwater samples were obtained from Ota environs and tested for Iron impurity using Plainest 8000 photometer. Adsorbents such as rice husk, plantain peel, and limestone were used in the treatment of the water samples. All three adsorbents were washed with distilled water and oven dried at 100oC for 24 hours. The dried plantain peel was ground to powder using pestle. Both the rice husk and limestone occurred naturally in granular states. The density of rice husk, plantain peel and limestone were found to be 0.332 kg/l, 0.6 kg/l and 2.614 kg/l respectively. Subsequently, all three materials were heated to 200oC in an oven for 6 hours. They were, thereafter, sieved using 425 MIC sieve. Batched experiments on the efficiency of iron removal were conducted by measuring 10 ml of each adsorbent and adding it to 100 ml of water samples in turn. The mixture was stirred using a magnetic stirrer and the contact time during stirring was varied for 5, 10, 15 and 20 minutes in order to compare treatment efficiency. Results indicate that all three materials removed iron from the water samples. However, only limestone showed a consistent reduction in iron concentration with respect to time while the agricultural wastes (rice husk and plantain peel) had fluctuations in iron concentration with respect to time. Limestone, rice husk and plantain peel had ultimate removal efficiencies of 56.7%, 79% and 83.3% at 20, 20 and 15 minutes respectively. Further experiments were recommended in other to determine optimum iron removal conditions

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: water treatment, adsorption, adsorbent, iron, drinking water.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 27 Jun 2016 13:05
Last Modified: 27 Jun 2016 13:05

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